WinZip Courier Sending large attachments has never been easier or safer. Automatically encrypt, compress, and secure attachments and emails.

30-day money back guarantee

WinZip Courier now included with the purchase of WinZip Suite and WinZip Enterprise.

The easiest way to securely email any size file.

WinZip Courier enables you to seamlessly share any files as email attachments, with AES 256-bit military-grade encryption and state of art WinZip compression.

Just attach the files and WinZip Courier will do the rest.

Seamless User Experience

Seamless User Experience

Effortless Encryption, Compression and Conversion

Military-grade encryption

Military-grade encryption

AES 256-bit FIPS compliant encryption to protect attachment and email data

Policy Enforcement

Policy Enforcement

Seamless Integration with WinZip Enterprise for Policy enforcement

What can you do with WinZip Courier?

Attach large or multiple files

Attach large or multiple files

  • Compress attachments automatically
  • Retain file and folder structure
  • Secure the attachment content
  • Upload to the cloud when needed
Seamless AES 256-bit Military-Grade Encryption

Seamless AES 256-bit Military-Grade Encryption

  • Seamless compress and encrypt attachments
  • Encrypt the whole message
  • Military grade AES 256-bit Encryption FIPS 197
  • FIPS 140-2 support with WinZip Enterprise
Automated computer maintenance

Secure content by converting to PDF

  • Seamlessly converts Office documents to PDF
  • Combine multiple documents into a single PDF
  • Secure content with read only PDFs
  • PDF digital signature support
Your preferred cloud provider to share files securely

Your preferred cloud provider to share files securely

  • Leverage ZipShare or your preferred cloud provider to share files
  • Automatically create download links
  • Time-bomb your shared files for extra security and space saving
Support for Webmail and Microsoft Outlook

Support for Webmail and Microsoft Outlook

  • Microsoft Outlook Add-In to manage attachments
  • Google Chrome, Microsoft Edge and Firefox Extension
  • Compress, Encrypt and share attachments to any email

Trusted by government agencies and regulated industries worldwide.

Defense, Government & Military

Defense, Government & Military

FIPS 140-2 compliant, trusted for DFAR and FIPS 197

Best-in-class encryption methodologies protect classified information.

Law Firms

Law Firms

PII data protection to keep client data confidential

Ensure privacy controls with leading data encryption and compression methodologies.



HIPAA-compliant to ensure adherence to protocols

Attachment encryption, convert to PDF, and digitally protect and sign.



Flexible encryption to secure private data

Encrypt and compress any type of data, PII, or PHI.

Financial Services

Financial Services

Best-in-class encryption and compliance

Bank-level encryption with an added layer of compression protects financial data from unauthorized access using the latest technology.



Encrypted offline storage to protect IP

Protect attachment and email content for simple and secure information exchange.

Email attachment solution tailored for your needs

WinZip Courier for Home

The leading email solution for sending large files with simple zipping and unzipping technology.

  • No more email attachment size limits
  • Easily zip and encrypt attachments for safe delivery
  • Share seamlessly from your email using leading cloud services
  • Convert to PDF, add watermarks, and resize images
Best value

WinZip Courier for Business

The leading email solution for enforcing email attachment security policies integrated with WinZip Enterprise.

Volume Pricing

  • Get the best of WinZip Courier
  • Enterprise Policy Enforcement
  • Access to the latest version


  • Step-by-step guided setup
  • Specialized support access
  • Access to any version
Business quote

System Requirements

OS Compatibility

OS Compatibility

32-bit or 64-bit versions of:

  • Windows 11, 10
  • Minimum .NET version:

  • 4.6
Minimum Processor

Minimum Processor

  • 1 gigahertz (GHz) or faster processor
Minimum Memory

Minimum Memory

  • 1 gigabyte (GB) for 32-bit or 2 GB for 64-bit


  • Hard drive with at least 150MB free space for installation
Additional Specs

Additional Specs

Email and Webmail:

  • Microsoft Outlook 2016, 2019, 2021*
  • Office 365 (desktop client only)
  • Gmail
  • Yahoo! Mail
  • Zoho
*Not compatible with the with the new Outlook


  • Microsoft Internet Explorer 11
  • Google Chrome v60 or later
  • Mozilla Firefox v57 or later
  • Microsoft Edge v80 or later

    Cloud providers:

  • ZipShare
  • Box
  • CloudMe
  • Dropbox
  • Google Drive
  • MediaFire
  • OneDrive
  • SugarSync